The Amex Oil Index
XOI, -1.63%
eked out a 0.1% gain to close at 1,126.92 points. The December crude contract fell 83 cents to $58.88 a barrel as declines in U.S. petroleum-product supplies last week failed to offset a rise in crude inventories.

The Amex Natural Gas Index
XNG, -0.91%
rose 0.3% as natural gas climbed 10 cents to $7.81 per million British thermal units. The Energy Department said natural-gas inventories fell 9 billion cubic feet for the week ended Oct. 27, marking the first decline of the heating season. See full story.

Meanwhile, the drop in crude oil prices caught up with the Philadelphia Oil Service Index
OSX, -1.06%
shaving 0.6% from the index to leave it at 189.58 points.

On the oil index, Repsol
REP, -0.77%
shares led the advance, rising 1.8% to $33.56. Chevron Corp.
CVX, -0.86%
was up 1.2% to close at $67.79.

Earlier this week, the U.S. Interior Department dropped claims that Chevron systematically underpaid the government for natural gas produced in the Gulf of Mexico. See Dow Jones story.

In earnings news, Williams Cos. Inc.
WMB, -1.82%
added 0.4% to $24.43 after reporting that third-quarter net income soared from to $106.2 million, or 18 cents a share, from $4.4 million, or 1 cent a share, a year earlier. Earnings excluding discontinued operations and after other adjustments would have been 28 cents a share. See full story.

Analysts surveyed by Thomson First Call had been expecting earnings of 26 cents a share, on average.

The Tulsa, Okla. natural gas company raised its 2006 earnings forecast to $1.05 to $1.20 a share from 95 cents to $1.20 a share.

On the oil service index, Transocean Inc.
RIG, -3.96%
shares enjoyed the biggest gains, rising 1.6% to $72.43. The contract driller reported third-quarter net income of $309 million, or 96 cents a share, up from $170.4 million, or 50 cents, in the year-earlier period. The latest profit also included a 13-cent gain on the sale of two drilling rigs. See full story.

Revenue rose 35% to $1.03 billion from $762.6 million.

Analysts expected a profit of 71 cents a share on $987 million of revenue.

Todco
THE, -0.63%
shares rose 3.6% to $33.81 after the drilling services company said third-quarter income rose to $55.5 million, or 92 cents a share, from $19.1 million, or 31 cents a share.

Intraday Data provided by SIX Financial Information and subject to terms of use.
Historical and current end-of-day data provided by SIX Financial Information.
All quotes are in local exchange time. Real-time last sale data for U.S. stock quotes reflect trades reported through Nasdaq only.
Intraday data delayed at least 15 minutes or per exchange requirements.